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Updated: Jan 12, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Published on: April 10, 2017

Complex transition pathways in boiling and cavitation.

M Gallo¹, F Occhioni¹, F Magaletti¹

¹Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, via Eudossiana 18, 00184 Rome, Italy.

Journal of Fluid Mechanics

|November 3, 2025

Summary

This summary is machine-generated.

Investigating vapour bubble nucleation in metastable liquids, this study reveals pathways deviate from classical theory. It introduces a new method to calculate nucleation times, highlighting surface wettability

Keywords:

boiling bubble cavitation diffuse interface fluctuating hydrodynamics nucleation thermal fluctuations.

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Last Updated: Jan 12, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

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Published on: April 10, 2017

Evolution of Staircase Structures in Diffusive Convection

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Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation

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Published on: April 11, 2014

Area of Science:

Fluid dynamics
Thermodynamics
Computational physics

Background:

Classical nucleation theory often oversimplifies complex phase transitions.
Understanding vapour bubble nucleation is crucial for various physical and chemical processes.

Purpose of the Study:

To investigate vapour bubble nucleation pathways and times in metastable liquids.
To develop a novel method for calculating nucleation times using hydrodynamics.
To analyze the impact of surface wettability on heterogeneous nucleation.

Main Methods:

Combining Navier-Stokes-Korteweg dynamics with rare event techniques.
Utilizing long-wavelength density fluctuations as a key nucleation driver.
Inferring diffusion coefficients from hydrodynamic data.

Main Results:

Nucleation pathways deviate from classical predictions; bubble volume is insufficient as a reaction coordinate.
Surface wettability significantly impacts heterogeneous nucleation, with homogeneous nucleation observed on moderately hydrophilic surfaces.
Hydrophobic surfaces accelerate the spinodal decomposition process.

Conclusions:

The proposed method accurately predicts nucleation times and reveals non-trivial effects of surface properties.
The approach offers a general framework for studying complex nucleation phenomena in various fluids and geometries.
Findings challenge classical theories and align with atomistic simulation results.